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A method for verifying calculation results of power system faults

A technology for calculating results and power systems, applied in electrical components, circuit devices, emergency protection circuit devices, etc., can solve problems such as hidden dangers of power system safety, protection of malfunction and refusal to operate, and burning equipment, etc. The effect of eliminating mis-setting calculation errors and avoiding mis-setting calculation accidents

Active Publication Date: 2018-03-06
STATE GRID ECONOMIC TECH RES INST CO +3
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Problems solved by technology

[0003] Safety production is the lifeline of electric power enterprises, so the anti-mistake setting technology is the most important research topic in the setting calculation. It has been proved that the setting calculation system without the anti-mistake technology will cause missetting, and the resulting protection misoperation and refusal also occur from time to time. , ranging from tripping and load shedding, to burning equipment or even causing power grid paralysis, resulting in greater social and economic losses
[0004] At present, there is a lack of effective error checking and correction means for the setting calculation of the power system at home and abroad. It will bring serious hidden dangers to the power system

Method used

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  • A method for verifying calculation results of power system faults
  • A method for verifying calculation results of power system faults
  • A method for verifying calculation results of power system faults

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Embodiment Construction

[0022] The steps of the present invention will be further described in detail below in conjunction with the accompanying drawings. The verification method of the calculation result of the power system failure disclosed by the application includes the following steps: Step 1: establishing a power grid model of the power system that needs to be verified by the calculation result, including Power system primary equipment model information, primary equipment topological relationship, secondary equipment fixed value model information, primary and secondary equipment correspondence. Step 2: Verify the parameters of the primary equipment (hereinafter referred to as components) in the grid model, such as figure 2 As shown, this step checks the value range of each component parameter in the power grid model. The parameters of various components in the power system have a certain reasonable value range. If it exceeds this range, an error must occur, so an upper and lower limit can be se...

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Abstract

A method for verifying calculation results of power system faults. Through the whole process of verification, different circuit principles are used to verify and identify whether there is a problem in the calculation of short-circuit faults in the power system. The whole process verification includes power system primary equipment parameter verification, power system line and primary equipment connection model verification, power system model verification and short-circuit calculation verification, and the power system fault calculation results based on Kirchhoff’s law are used to The short-circuit calculation part is checked to realize the closed-loop management of the whole process of short-circuit fault calculation.

Description

technical field [0001] The invention belongs to the technical field of power system fault calculation, and is a new method suitable for checking the whole process of power system fault calculation results, and adopts Kirchhoff's law to check the short-circuit calculation results. technical background [0002] Fault calculation is a basic and important algorithm in power system analysis. It is an important core module for applications such as relay protection setting calculation, relay protection setting value online verification, substation equipment selection, and substation design feasibility study analysis. In the setting calculation of relay protection, the fault calculation result is the basis of the setting of protection setting, which is directly related to whether the relay protection device can operate correctly, and directly related to the safe operation of the power grid and the improvement of power supply reliability. [0003] Safety production is the lifeline of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/00
Inventor 王均慧杨常府刘颖于荣成张月品王立鼎焦邵华
Owner STATE GRID ECONOMIC TECH RES INST CO
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